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ATE228970T1 - COMPOSITION BASED ON ZIRCONIA AND CEROXIDE, METHOD FOR THE PRODUCTION THEREOF AND ITS USE - Google Patents

COMPOSITION BASED ON ZIRCONIA AND CEROXIDE, METHOD FOR THE PRODUCTION THEREOF AND ITS USE

Info

Publication number
ATE228970T1
ATE228970T1 AT96924030T AT96924030T ATE228970T1 AT E228970 T1 ATE228970 T1 AT E228970T1 AT 96924030 T AT96924030 T AT 96924030T AT 96924030 T AT96924030 T AT 96924030T AT E228970 T1 ATE228970 T1 AT E228970T1
Authority
AT
Austria
Prior art keywords
composition based
mixture
calcination
conclusion
precipitate
Prior art date
Application number
AT96924030T
Other languages
German (de)
Inventor
Maryline Aubert
Thierry Birchem
Gilbert Blanchard
Olivier Touret
Original Assignee
Rhodia Chimie Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9480620&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE228970(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Rhodia Chimie Sa filed Critical Rhodia Chimie Sa
Application granted granted Critical
Publication of ATE228970T1 publication Critical patent/ATE228970T1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/945—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific catalyst
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G25/00—Compounds of zirconium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G25/00—Compounds of zirconium
    • C01G25/02—Oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/206—Rare earth metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20715—Zirconium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/40—Mixed oxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/50—Solid solutions
    • C01P2002/52—Solid solutions containing elements as dopants
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
    • C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Biomedical Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

The invention relates to a composition based on zirconium oxide and comprising cerium oxide which has a specific surface of at least 30 m2/g after calcination for 6 hours at 900° C. and which is provided in the form of a pure solid solution of cerium oxide in zirconium oxide. According to another embodiment, this composition can additionally comprise a doping element and can exhibit a specific surface of at least 25 m2g after calcination for 6 hours at 1000° C. A process for the preparation of these compositions comprises the following stages:a mixture is prepared, in liquid medium, containing a zirconium compound and a cerium(IV) compound;the said mixture is heated at a temperature greater than 100° C.;the reaction mixture obtained on conclusion of the heating is brought to a basic pH;the precipitate thus obtained is recovered;the said precipitate is calcined;the doping element being, if appropriate, added either to the starting mixture in liquid medium or to the reaction mixture obtained on conclusion of the heating.
AT96924030T 1995-07-03 1996-06-28 COMPOSITION BASED ON ZIRCONIA AND CEROXIDE, METHOD FOR THE PRODUCTION THEREOF AND ITS USE ATE228970T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9507979A FR2736343B1 (en) 1995-07-03 1995-07-03 COMPOSITION BASED ON ZIRCONIUM OXIDE AND CERIUM OXIDE, METHOD OF PREPARATION AND USE
PCT/FR1996/001003 WO1997002213A1 (en) 1995-07-03 1996-06-28 Composition based on zirconium oxide and cerium oxide, preparation method therefor and use thereof

Publications (1)

Publication Number Publication Date
ATE228970T1 true ATE228970T1 (en) 2002-12-15

Family

ID=9480620

Family Applications (1)

Application Number Title Priority Date Filing Date
AT96924030T ATE228970T1 (en) 1995-07-03 1996-06-28 COMPOSITION BASED ON ZIRCONIA AND CEROXIDE, METHOD FOR THE PRODUCTION THEREOF AND ITS USE

Country Status (18)

Country Link
US (1) US6214306B1 (en)
EP (1) EP0863846B1 (en)
JP (1) JP3490456B2 (en)
KR (1) KR100431919B1 (en)
CN (1) CN1177764C (en)
AT (1) ATE228970T1 (en)
AU (1) AU720555B2 (en)
BR (1) BR9609435A (en)
CA (1) CA2224409C (en)
DE (1) DE69625237C5 (en)
ES (1) ES2188767T3 (en)
FI (1) FI114909B (en)
FR (1) FR2736343B1 (en)
MX (1) MX9800114A (en)
MY (1) MY114721A (en)
NO (1) NO322625B1 (en)
WO (1) WO1997002213A1 (en)
ZA (1) ZA965464B (en)

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KR100431919B1 (en) 2004-07-16
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BR9609435A (en) 1999-05-25
WO1997002213A1 (en) 1997-01-23
DE69625237T2 (en) 2003-08-21
JPH10512191A (en) 1998-11-24
EP0863846B1 (en) 2002-12-04
MX9800114A (en) 1998-04-30
NO322625B1 (en) 2006-11-06
FR2736343B1 (en) 1997-09-19
CN1177764C (en) 2004-12-01
EP0863846A1 (en) 1998-09-16
FI980007A0 (en) 1998-01-02
CA2224409C (en) 2002-04-09
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AU6462196A (en) 1997-02-05
DE69625237D1 (en) 2003-01-16
NO976144L (en) 1998-03-03
ES2188767T3 (en) 2003-07-01
FR2736343A1 (en) 1997-01-10
DE69625237C5 (en) 2020-04-23
CN1193948A (en) 1998-09-23
US6214306B1 (en) 2001-04-10
AU720555B2 (en) 2000-06-01
ZA965464B (en) 1997-04-24
CA2224409A1 (en) 1997-01-23
JP3490456B2 (en) 2004-01-26

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